diff --git a/app/common/cache/AdminAccountSafeCache.php b/app/common/cache/AdminAccountSafeCache.php
index c6a8530..813bc35 100644
--- a/app/common/cache/AdminAccountSafeCache.php
+++ b/app/common/cache/AdminAccountSafeCache.php
@@ -15,7 +15,7 @@ class AdminAccountSafeCache extends BaseCache
     {
         parent::__construct();
         $ip = \request()->getLocalIp();
-        $this->key = $this->tagName . $ip;
+        $this->key = $this->tagName . str_replace('.', '_', $ip);
     }
 
     /**